Keystones — Cornerstone
Five GCSE retrieval questions · 25 August 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄7 + 1⁄4
Answer: 23⁄28 -
2. Algebra Two-step equations
Solve: 7x + 5 = 61
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places
Answer: 8.49cm -
4. Ratio Sharing in a ratio
Divide 98 in the ratio 1:4:2
Answer: 14, 56 and 28 -
5. Statistics Mean
Find the mean of: 19, 14, 1, 10
Answer: 11